Which two major publishing houses merged in 2013 to create the world's largest book publisher, controlling approximately 25% of the global English-language publishing market?

The publishing world has seen significant consolidation over the decades, with major houses merging to create powerful literary empires. These mergers have dramatically reshaped the landscape of book publishing, influencing which authors get published, how books are marketed, and even what we read. Test your knowledge about one of the most significant publishing industry mergers in recent history!

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Penguin Random House (Penguin Books + Random House)
HarperCollins Macmillan (HarperCollins + Macmillan Publishers)
Simon & Hachette (Simon & Schuster + Hachette Book Group)
Oxford Wiley (Oxford University Press + John Wiley & Sons)